feat: improve cursor of some components

src/tabbar-item/index.less

@@ -9,6 +9,7 @@
   color: @tabbar-item-text-color;
   font-size: @tabbar-item-font-size;
   line-height: @tabbar-item-line-height;
+  cursor: pointer;
 
   &__icon {
     position: relative;